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Business/industrial management and organisation
5
Energiequellen und natürliche Rohstoffquellen
Energy and natural resources
5
Environment and conservation
5
Management und Organisation von Betrieben
5
Umweltschutz und Naturschutz
5
Conditions
3
Energy
3
International Institutions
3
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3
Nature
3
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Technology
3
KAT12 International Institutions, Relations, Conditions
2
KAT58 Technology, Energy
2
KAT65 Natural Environment, Nature
2
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